[en] Methods are presented and equipment is described ensuring joint operation of the I-2 linear accelerator for three beam lead-out channels: an injection channel into the proton synchrotron, a channel of beam parameter measuring and a channel of beam lead-out into the atmosphere. Data are given on intensity and uniform distribution of the led-out proton beam with about 23 Mev energy. Maximum pulse current of the proton beam led out into the atmosphere is 100 mA

[en] An algorithm of the 'BALANCE-2' program is described. On the basis of this algorithm a method of determination of balanced parameters errors and parameters of uncharged particles is developed. The 'Errors' program is presented allowing to compute particle trajectory parameter errors of events for hypotheses which have not been rejected as a result of running the 'Balance-2' program. The 'ERRORS' program is written in the BESM-4 machine codes

[en] The method for studying photomultiplier characteristics based on counting the number of photons detected with photomutipliers is described. The time characteristics of the FEU K14Fs-50 and FEU-63 photomultipliers are presented. The mean resolution is sigmasub(1)=200 ns for FEU K14Fs-50 and sigmasub(2)=350 ns for FEU-63. The results are in good agreement with the calculated values of the mean resolutions for neutrons with momenta of 200-700 MeV/c, sigmasup(n)sub(1)=0.400 ns and sigmasup(n)sub(2)=0.550 ns

[en] The technique and description of TREC and TREC6 codes for few-group two- and three-dimensional calculations of a channel type reactor performed in terms of the theory of heterogeneous reactor are given. For the solution differential transformation of equations of heterogeneous theory combined with the sine expansion of axial component of neutron flux into the Fourier series and nonlinear iteration procedure for determining the effective multiplication factor are used. The codes permit to attain the highest speed of response when calculating the series of proximate problems (reactor variant calculations; using codes as a modulus in optimization and non stationary problems)

[en] Consideration of the beam emittance growth based on the analysis of solution of the system of equations of motion for charged particle ensemble is carried out. The system of equations of motion is obtained by meas of the Lagrange function with a generalized potential including Helmholtz bound energy. The consideration points out existence of at least three types of processes resulting in the beam emittance growth at its transport and acceleration: effects similar to optics aberrations associated fields and non-linearity of forces of proper space charge; changes in beam temperature and entropy without heat exchange with external energy sources (they are similar to reversible thermodynamic cycles); processes with heatinflow and outflow, particularly, irreversible phenomena in particle beams resulting in entropy generation

[en] Substantiated are the prospects for uses of a new type of the position sensitive detector (PSD) - an emission electroluminescent gamma chamber (EGC) - in radioisotope diagnostics. The operation principle is the following: gamma quanta emitted by the radioactive indicator pass through the collimator and interact with a dielectric layer, e.g. condensed noble gas. The Compton and photoelectrons producing ionization form electron-ion pairs in the condensed substance. In the chamber bottom - electrode electric field the electrons surmount positive ion attraction and drift to the phase interface. In the field of several kilovolts per 1 cm the electrons emit into the gaseous phase. In the gaseous phase the electrons are registered by one of the known methods (e.g., according to the gas charge in the proportional regime or using electroluminescence). The main characteristics of the present-day gamma chambers (GC) of different types are considered and the fundamental and technological difficulties of their improvement. The EGC on the basis of solid xenon are characterized by high efficiency of gamma radiation recording (close to the NaI(Tl) crystal efficiency), approximately 3% energy resolution for the 140 keV gamma quanta (like semiconducting GC); approximately 1-2 mm space resolution, possibility of detector construction of great area, utilization of the approbated data outlet and representation system (like scintillation analog GC). The defaults of such a detector are the following: necessary crystal cooling down to 160 K and temperature stabilization during its operation; necessary utilization of the special system (a reservoir) for gas storage, formed after crystal evaporation after its heating, and ensurance of high purity of the gas (the impurity concentration should be less than 10^-6)

[en] Self-consistent solutions for the evolution of isotropic cosmological models filled with quantum massive scalar field with conformal relation with gravitation are investigated. As initial state vacuum field state is accepted, vacuum being determined as field state with the least energy. Two possible types of Einstein equation modifications for account of a local independent on mass contribution into conformal anomaly vacuum polarization are investigated. It is shown that gravitational field equations with higher derivatives lead to singularities. Minimal modification of Einstein equations admits non singular cosmological models, however the production processes of vacuum quasiparticles are of many orders less than those required for the model operation under realistic Friedman regime

[en] Energy, angular and correlation characteristics of slow particles, ≤30 MeV/nucleon emitted in the reaction of 32 GeV/c muon inelastic scattering by photoemulsion heavy nuclei, A≅100, at small values of transfered four momentum square, Q²≅0.1 (GeV/c)², are analyzed. Arguments for formation of multiparticle moving excited cluster in muon events are presented: explanation of observed characteristics of slow particles in the framework of statistic theory is possible if it is assumed that cluster forms initially in the reaction, and then formation of moving excited nucleus - the main source of slow particles - takes place during cluster interaction with nucleus-target. Possibility of formation of other preequilibrium sources of slow particles is mentioned

[en] This paper is devoted to consideration of the problem on the Cherenkov radiation of extended charged tachyons. It contains suggestions to carry out experiments on search for such tachyons based on application of tachyon Cherenkov radiation features. If a charged tachyon is produced in any process, it manifests itself as a powerful and practically point source of hard X-ray and γ radiation with typical angular distribution. These properties of superlight particles, being of the brightly expressed ''signature'' character, can be the bases for the experiments on their search both by means of bubble chambers and electronic technique